text: Vitaly Grigorievich Khlopin (Russian:Вита́лий Григо́рьевич Хло́пин) (January 1890 - 10 July 1950) was a Russian and Soviet scientist- radiochemist, professor, academician of the USSR Academy of Sciences (1939), Hero of Socialist Labour (1949), and director of the Radium Institute of the USSR Academy of Sciences (1939-1950). He was one of the founders of Soviet radiochemistry and radium industry, received the first domestic radium preparations (1921), one of the founders of the Radium Institute and leading participants in the atomic project and founder of the school of Soviet radiochemists.